89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*------------------------------------------------------------------------*/
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/* Sample code of OS dependent controls for FatFs R0.08b */
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/* (C)ChaN, 2011 */
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/*------------------------------------------------------------------------*/
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#include "ch.h"
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#include "ff.h"
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#if _FS_REENTRANT
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/*------------------------------------------------------------------------*/
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/* Static array of Synchronization Objects */
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/*------------------------------------------------------------------------*/
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static Semaphore ff_sem[_VOLUMES];
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/*------------------------------------------------------------------------*/
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/* Create a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_cre_syncobj(BYTE vol, _SYNC_t *sobj) {
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*sobj = &ff_sem[vol];
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chSemInit(*sobj, 1);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Delete a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_del_syncobj(_SYNC_t sobj) {
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chSemReset(sobj, 0);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Request Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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int ff_req_grant(_SYNC_t sobj) {
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msg_t msg = chSemWaitTimeout(sobj, (systime_t)_FS_TIMEOUT);
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return msg == RDY_OK;
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}
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/*------------------------------------------------------------------------*/
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/* Release Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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void ff_rel_grant(_SYNC_t sobj) {
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chSemSignal(sobj);
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}
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#endif /* _FS_REENTRANT */
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#if _USE_LFN == 3 /* LFN with a working buffer on the heap */
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/*------------------------------------------------------------------------*/
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/* Allocate a memory block */
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/*------------------------------------------------------------------------*/
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void *ff_memalloc(UINT size) {
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return chHeapAlloc(NULL, size);
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}
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/*------------------------------------------------------------------------*/
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/* Free a memory block */
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/*------------------------------------------------------------------------*/
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void ff_memfree(void *mblock) {
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chHeapFree(mblock);
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}
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#endif /* _USE_LFN == 3 */
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